Artificial graphite as well as preparation method and application thereof

The invention discloses artificial graphite as well as a preparation method and application thereof. The preparation method comprises the following steps: crushing petroleum coke particles, and grading to obtain a petroleum coke crushed product and first petroleum coke micro powder; grading the first petroleum coke micro powder to obtain second petroleum coke micro powder with a bonding value P in a range of 20-300; the temperature of a granulation kettle is raised to 200-400 DEG C, the rotating speed is 10-20 rpm/min, the nitrogen flow is 1-3 m < 3 >/min, the second petroleum coke micro powder and the crushed petroleum coke product are put into the granulation kettle for granulation, and a granulated material is obtained; and heating the granulation material to 2800-3000 DEG C, and carrying out graphitization so as to obtain the artificial graphite negative electrode material. Wherein the bonding value P is equal to n/{(D90-D10)/D502}; wherein n is the caking index of the petroleum coke micro powder, and D10